body{
	margin: 0px;
	background: url(../img/bg.png) no-repeat;
	background-size: 100% 100%;
  	font-family: 'PINGFANG-BOLD'; 
}
*{
	margin: 0;
}
.btn{
	position: absolute;
	display: block;
	width: 70vw;
	height: 70vw;
	margin: 0 15%;
	margin-top: 75%;
	background: url(../img/btn.png) no-repeat;
	background-size: 100% 100%;
	z-index: 10;
}
.write{
	position: absolute;
	margin-top: 12vh;
	width: 100%;
	color: white;
	font-size: 5vw;
	font-weight: normal;
	text-align: center;
}
.write p{
	color: rgba(255,255,255,0.7);
	letter-spacing: 3px;
	margin-top: 1vh;
}
.write b{
	color: white;
	font-weight: normal;
	font-size: 6.5vw;
}



.btn-second{
	display: block;
	position: absolute;
	z-index: 2;
}
.btn-second img{
	position: absolute;
	width: 25vw;
}
.btn-second p{
	position: absolute;
	padding:0 2.5vw;
	display: flex;
	text-align: center;
	justify-content:center;
	align-items: center;
	width: 20vw;
	height: 25vw;
	color: white;
	font-size:3.7vw;
	text-shadow:2px 2px 2px #10418f;
}
.one{
	top: 35vh;
	left: 3vw;
}
.two{
	top: 25vh;
	left: 30vw;
}
.three{
	top: 32vh;
	left: 65vw;
}
.four{
	top: 48vh;
	left: 40vw;
}
.button-div{
	position: absolute;
	width: 94vw;
	height: 85vh;
	top: 7.7vh;
	border-radius: 10px;
	margin-left:3vw;
	z-index: 2;
	background: url(../img/tankuang1.png) no-repeat, url(../img/bg.png) no-repeat center center;
	background-size: 100% 100%,100vw 100vh;
	background-blend-mode: screen, multiply;   
	-webkit-mask-image:url(../img/tankuang1.png) ;
	-webkit-mask-repeat:no-repeat;
	-webkit-mask-size: 100% 100%;
	-webkit-mask-position:center center;
}
.button-div a{
	display: block;
	position: absolute;
	right: 0;
	top: 1vh;
	width: 15vw;
	height: 15vw;
}
.img{
	position: absolute;
	background-color: black;
	width: 18vh;
	height: 18vh;
	margin-left: 1vh;
	margin-top: 1vh;
	border-radius: 10px;
	overflow: hidden;
}
.button-div p{
	
	padding: 2vw 10vw;
	text-indent: 7vw;
	font-size: 3.5vw;
	color: white;   
}
.button-div b{
	position: relative;
	top: -1vh;
	left: 10vw;
	font-size: 7vw;
	color: white;
}
.button-div img{
	position: relative;
	width: 100%;
}
